Just reread, it looks like you're using a freehand stb method. That means you'll probably be extracting a lot of the oils besides just dmt.Try letting the oil-looking stuff evaporate a little longer, then try sticking it in the freezer to see if it solidifies (it should) usually once my friend does that it stays solid. You could smoke it as it is or recrystalize to clean it up (search for "re-crystalization pictorial")